SBC 3/4 Gen V8 MLS Exhaust Manifold

The SBC 3/4 Gen V8 MLS Exhaust Manifold gasket from Cometic Gaskets is a critical sealing component designed for Small Block Chevy engines running aftermarket or OEM exhaust headers and manifolds. This pair of multi-layer steel gaskets addresses one of the most common failure points in engine builds: exhaust manifold leaks that compromise performance, efficiency, and longevity. Whether you're building a street engine, restomod, or race application, proper exhaust sealing is non-negotiable for reliable power delivery and emissions control.

Cometic's multi-layer steel (MLS) construction uses precisely engineered material layers to create superior crush strength and gas-sealing capability compared to standard composite gaskets. The 1.875-inch round port design matches the port opening on Gen V small block cylinder heads, ensuring proper alignment and clamping force distribution across the gasket face. MLS technology resists blow-by, thermal cycling, and vibration far more effectively than traditional materials, making these gaskets the preferred choice for modified engines where cylinder pressure and exhaust temperatures exceed stock tolerances. The compact 20-inch length and 0.43-pound weight reflect the precision engineering required to seal critical combustion chambers without excess material.

Mechanics and engine builders rely on this gasket pair for naturally aspirated and boosted SBC applications, from mild 350ci street builds to high-compression 383-stroker combinations. Installation requires standard header bolt torque sequences and clean mating surfaces to achieve optimal sealing—Cometic gaskets demand precision installation but reward it with years of leak-free operation. If you're experiencing exhaust leaks, rebuilding your short-block, or upgrading to performance headers, the SBC 3/4 Gen V8 MLS Exhaust Manifold gasket pair ensures your combustion seal remains intact under all driving conditions.